Steve...I have 8611s on my elevators. They are working fine and have been for over 70 flights. I also have the dubro arms on mine and they too have been fine, no probs. I did however swap out the pushrods from SM and replaced them with the H9 titanium rods. I put a dubro c/f locking clevis on one end and a ball link on the other. Mine is an older F15 and the clevises that came with it were kind of fragile looking.

Mike